Abstract
MicroRNAs (miRNAs) have been shown to be critically involved in control of cell survival and cell death decisions. The main function of miRNAs is to direct posttranscriptional regulation of gene expression, typically by binding to 3’ UTR of cognate mRNAs and inhibiting their translation and/or stability. Hundreds of miRNAs, many of them evolutionarily conserved, have been identified in mammals, but their physiological functions are just beginning to be elucidated. Endoplasmic Reticulum (ER) stress has been associated with a wide range of diseases, including neurodegeneration, stroke, bipolar disorder, cardiac disease, cancer and diabetes. Although the Unfolded Protein Response (UPR) is primarily pro-survival, in the event of prolonged or severe ER stress that is not resolved, the UPR switches to initiation of apoptosis. Here we have discussed the role of miRNAs in determining cell fate during conditions of ER stress. This chapter will provide novel insights into regulation of UPR signaling by miRNAs.
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- AGO:
-
Argonaute
- ATF4/6:
-
Activating Transcription Factor 4/6
- Bim:
-
Bcl2-interacting mediator of cell death
- BMPs:
-
Bone Morphogenetic Proteins
- CHOP:
-
C/EBP Homologous Protein
- CLL:
-
chronic lymphocytic leukemia
- CRE:
-
ATF/cAMP response elements
- DGCR8:
-
DiGeorge Critical Region 8
- DICER:
-
Ribonuclease Type III
- DNMT:
-
DNA Methyl Transferase
- DROSHA:
-
Ribonuclease Type III
- ds:
-
double stranded
- eIF2α:
-
eukaryotic Initiation Factor-2α
- eIF4E:
-
eukaryotic Initiation Factor 4E
- ER:
-
Endoplasmic Reticulum
- ER-α:
-
Estrogen Receptor α
- ERAD:
-
ER Associated Degradation
- ERK:
-
Extracellular signal Regulated Kinase
- ERSE:
-
ER stress responsive elements
- HDAC:
-
histone deacetylase
- hnRNP:
-
heterogeneous nuclear ribonucleoproteins
- hp-RNAs:
-
long hairpin RNAs
- IRE1:
-
Inositol Requiring Enzyme 1
- M7G:
-
7-methylguanylate
- MAPK:
-
Mitogen Activated Protein Kinase
- miRNA:
-
microRNA
- mRNA:
-
messenger RNA
- PACT:
-
Protein kinase R-activating protein
- PBs:
-
P-bodies
- PERK:
-
double stranded RNA-activated protein kinase (PKR) –like ER Kinase
- pre-miRNA:
-
precursor-miRNA
- pri-miRNA:
-
primary miRNA transcript
- RISC:
-
RNA-induced silencing complex
- SDN-1:
-
small RNA degrading nuclease
- SINEs:
-
short interspersed nuclear elements
- T:
-
Thymidine
- TRBP:
-
TAR RNA binding protein
- TGF-ß:
-
Transforming growth factor-ß
- TRBP:
-
TAR RNA-binding protein
- tRNAs:
-
transfer RNAs
- UPR:
-
Unfolded Protein Response
- U:
-
Uracil
- UTR:
-
Untranslated Region
- XBP1:
-
X-box binding protein 1
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Acknowledgements
Our research is supported with the financial support of the Health Research Board (grant number HRA_HSR/2010/24) and the Millennium Fund from NUI Galway to S.G.
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Read, D., Gupta, A., Cawley, K., Gupta, S. (2012). Regulation of ER Stress Responses by microRNAs. In: Agostinis, P., Afshin, S. (eds) Endoplasmic Reticulum Stress in Health and Disease. Springer, Dordrecht. https://doi.org/10.1007/978-94-007-4351-9_6
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DOI: https://doi.org/10.1007/978-94-007-4351-9_6
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